Pump-jack.



'IIED @TIES PATENT OFFICE.

LAWRENCEGUY RITTER, on cnoMwELL, INDIANA.

PUMP-JACK. i

This invention relates to pump jacks, or adevice for operating thereciprocatory pump rod of a pump structure, Aand the primary object ofthe invention is to provide a pump jack structure which may beadjusted'tofit pump rods of different strokes.

Another object of this invention is'to provide a pump jack, whichincludes a plurality of bars adapted for adjustable connection to eachother and to a vertically reciprocable pump rod, which bars are operatedthrough the medium of a rotatable spurred wheel, which wheel is in turnrotated by any suitable power source and its teeth or spurs engageopenings in a plate which is attached to one of the connecting bars formoving the bars vertically for reciprocatingthe pump rod. Y

'With the foregoing and other objects in view, this invention consistsin such novel features of construction, combination and arrangement ofpartsa's will be hereinafter more fully described, illustrated'in theac'- companying drawings, and claimed.v f

In describing the invention in detail reference will be had to theaccompanying drawings wherein like Vvcharacters designate like andcorresponding parts thoughout the several views, and in which:

Figue 1 is an edge view'offthepump jack.

Fig. 2 is a side elevation of the pump jack.

Fig. 3 is a side elevation ofy apart of the pump jack showing thesame'in av different adjusted position to that shown in dotted lines inFig. 2 of the drawings.

Fig. t is a section on the line 4--4 of Fig. 1, and

Fig. Fig. 1.

Referring more particularly to the drawings, 1 designates a support ofany suitable type which is positioned m close pronunity to the pump,upon which the pump )ack 1s to be used. This support has a suitablebearing 2 carried thereby. The bearing 2 Speciicationl of LettersPatent. Application filed January 19, 1917iY Serial No. 143,264. f v

5 is a cross section on the line 5-5 of rotatably supports a'shaft`Supon one end pof PatentedV Dee. 11,1917;

which is vmounted a pulley 4. `.A -beltx :1

travels about thepulley 4, for rotating ,the pulley, and consequentlythe shaft 3 by any suitable power source. f

The shaft 3 Vhas a wheel'v mounted thereon which is provided with aplurality of radiating fingers or spurs 7. The ingerswor.

spurs 7 are provided for-extending through openingsv '8 which arevformed in a vertical row, and in verticallyspaced relation to eachother in 'a plate 9 which plate is supported by suitable braces 10. The.braces 10 arev attached to straps 11, the ends of whichiare connectedthrough the medium of bolts or analogous fastening devices 12 Aandplates 13 which engage the inner surfaces ofthe ends vand hold them inthe proper spaced relation. The straps 11 bow outwardly so as tovprovide space between the sides of the plate 9 and the inner side ofthestraps,.to

allow the hub portion of the wheel 6 to pass downwardlyr between .theplate 9 and the straps 11,`so that the rotation of the wheel will movethe plate 9,1and consequently .the straps Y11 vertically. "The straps 11are provided with longitudinally extending slots 1 4 t which permit the'spurs .7 to project beyond the outer surface of the straps. The stra-ps11 are attached toa bar v20'of the pump jack structure by l`means ofv.Ufshaped bolts 21, so

that the rotary movement ofthe shaft 3,k

which is transmitted to' theplate 9 inta reciprocatory movement will'betransmitted yto the bar 20 for reciprocating the bar 20. The bar-20isconnected `through the.Y medium of a bar22 to thereciprocatory pump rodT23,

as clearly shown in'Fig. 1 of the drawings. In Figs. 2 and 3' ofthe"drawings astroke `regulating structure .is illustrated which isemployed forconnecting. thefbar 20to they Vpump'rod23.V The strokestarting structure, Y

which is generically indicated by the numeral 25 comprises a bar 26ywhichas A:piv-

otally connected to the bar 20.

The bar 26 is provided with a plurality of longitudinally spacedopenings 27, through which a bolt 28 extends for connecting thebar 22 toa relatively short bar 29. The

- relatively short bar 29 is connected as shown at 30 to the bar 20 andasshown at 31 to a bar 32. The latter bar is connected as shown at 33 tothe pump rod 23. l'By varying the adjustable connection between the bar26 and the relatively short bar 29 and also varying the angles of thebars'26, 29, and

32, the distance between the shaft 3 and the point of connectionwbetweenthe :bar-Q0 and the pump rod 23 may be varied for shorten-H ing orlengthening the stroke of the pump rod. t .A y j j The rotaryinovementof the shaft '3 will be converted into reciprocatory movement,

and transferred to the bar 20 by the engagementa-of they teeth or spurs..7- through the openings 8 of theplate 9, and through the "medium:vr ofvthe straps 11. A Thel vertical reciprocatory .movement 1 of the bar 20will be transmitted to the :pump-rod 23,1either throughithe mediumoftheVba-rQQ orthrough the anediuin ofthe fbars Q6, 29. yand 32 `as-herebefore described, for reciprocating thepumfpiarodnand,,operating,the pump. y 1 mFrom :the foregoing4description taken in connectoniwith the accompanying drawings, ther'advantages `fof ,construction and `ofthe 'methodoffoperation ofthcimproved pump jackxvill be readily apparent to those skilled in the. artto avhichithis inventiony appertains, and vwhile in? the, foregoingdescription,- the principle ofthe :operation of this invention haswbeendescribed together. with various features -ofconstruction, it; is to beunderstood.' th-at certain. vminor;'feainnes of con,- struction,combinatioin and arrangement; y of Vparts may be altered,to.suitpracticalcondi' tions provided such alterations are comprehend'edwithinfthe scope of What is claimed.

What-isclaimedis: A "1 @sa v1.1 In a pump .ij ack `struct ure,thecombina tion, offialpum-p rod, aerjotatable shaft,a wheel carried bysaidy shaft', a f plurality of v'radiating' spurs i formedcircumferentially about: said` wheelyrxa 1:plateA providedfwvvith aplurality vof ryertic'ally. f :spaced openings adapted toreceive saidspurs for reciproca-tr iing the plate by the rotarya-movementaof'saidffi'vheely ,pair of guard-y -plates I extend,- ingl about:saidfirst named-platefor guarding* andhguiding the operation of saidiivlieel, bar; U-shapedhbolts connecting said bar through said guard. 1andl guider straps*` for transmitting a: reciprocatory; movement fromsaidfirst namedzplatexto saidv bar, andcme-afns for connecting said.bar. to. saidr pu'mp i rod, '2. In a pump jack (structure, the combina--tjn w3- r* s ,',n

copies or me patent may be tained foi niet tion, of a pump rod, arotatable shaft, a Wheel. carriednby said shaft, a plurality ofradiating spurs formed circumferentially about said Wheel, a plateprovided With a plurality of vertically spaced openings adapted toreceive said spurs for recpiroc'ating the plate, by thel rotary movementof said Wheel, a pair of guard plates extending about said first named,plate fQr. guarding and guiding the,operation said Wheel, av bar,Jfshap'eol--4 bolts connecting said bar through said guard and guidestraps fortransmitting afrecipro/catpry movement from said first namedpia@ i@ araba, i adjustable ineansconiiected to saidbar and adaptedforconnectiom tov ,pump rod, said ustable means being ,constructed forvarying .the reciprocatory stroke transmitted to said pump rod by saidbar.

i In apump jack` structure, the combination, of a pump rod, rotary shaft, a spurred iv-heel carried by said "shaft for vrotation therewith,yaphlate provided With a plurality oflzopenings for receiving the spurslupon said Wheel fo rreciprocating thefplates .by the rotarymlovement:,ofsaidshafts, a pair oflguardplates `extending abontsaid l:first namedplate, sai d guard; yplates being pro- `videh )vith longitudinallyextending slots for. guidingthefmovementof, said spurred @hechabar,-meansponnecting said bar, to said guard plate,a second barpivotallyconnectedgto said tirst name,d bar, a relatively short-sbavpivetelly and adiustably Connected toY the lowerhend of 1said secondnamed bar, anda fourth bar vpivotally connected to ,one end ofsaid'relatively short bar and adapted torronnectQIi-.Witha `pump rod,.Sadsecfmd `mentioned rejlat,ivelyy shortland fourth bars bensnivetallyandv adiustabl'y Connected tot regulating the, l ength, oftheneciprocatory s,'rQl e transmittedfto said pump rod by saidfirstnamedbalaj;r

ture in presenceof tvvo lWitnesses. l

LAWRENCE GUY RITTER. Witnessesi F- RITTER, O B. RITTER.

ents eachgbiy addressing (Bo'xnrnisisiioner of Patents,

Washington, D. C. Y

